中文摘要：

泥沙颗粒的表面形貌与污染物质的吸附关系较少受到关注。采用场发射枪扫描电子显微镜进行泥沙颗粒表面形貌的研究与探测吸附作用后铜离子在泥沙颗粒表面的分布,模拟分析了铜离子的吸附分布规律。研究结果表明泥沙形貌对铜离子的吸附分布有重要影响,在泥沙颗粒表面的边脊和凹谷处吸附铜离子数量较多,在其它形貌特征处的铜离子吸附数量相对较少。曲率Cu反映了复杂形貌对于铜离子的吸附能力,当Cu=1.1时该区域吸附铜离子最多。

英文摘要：

Less attention if paid to the study of the sediment surface morphology and the adsorbed pollutant. In this paper, the field emission scanning microscope is used to measure the surface microscopic morphology of sediment particles and detect the location of the adsorbes copper ions. And the surface curvatures of the copper ions absorbed are computed to analyze the adsorption characteristics on sediment surface. The results show that the copper ions are mainly distributed in the ridge and valley of the particle surface and fewer ions are located in the other textures of the sediment surface. The curvature Cu reflects the adsorption capacity of copper ion on the complex surface. The area with Cu = 1.1 has great potential to adsorb copper ions.